Improvement in ore-concentrators



4 Sheets-$113M. 1.

F. .T. P. PASCOE.

ORE CONCENTRATOR.

No.174,974. Patented March 21,1876.

-- n h h m m u m f lwen/bir Wiinesses N.PETERS, PNDTO-LITHOGRAPHER, WASHINGTON, D G.

4 Sheets-Sheet 2.

F. .T. P. PASCOE.

ORE CONCENTRATOR.

No.174,974. Patented March 21,1876.

Witnesses:

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I 1! Al 1 11 I 1 v Ira/anion N'PETERS, FHOTOLIJTHOGRAPNER, WASHINGTON; D C

PATENT OFFIcn FRANCIS J 1 PASGQE, OF SALT LAKE CITY, UTAH TERRITORY.

'IMPRQVEMENT IN ORE-CONCENTRATORS.'

Specification forming-part of L ettersPate nt No. 174 ,974, dated March 21, 1876; application filed August 1, 1674.

To all whom it may, concern Be it known that], FRANCIS J. P. PASGOE, of Salt Lake City, in the Territory of Utah, have invented an Improvement in'Ore-Separators, whereof the following is a full and clear description, "reference being bad to the accompanying drawings, wherein- Figure 1 is a sideelevation, and Fig. 2 is a plan, of the front half of the said invention. Fig. 3 is a side elevation, and Fig. {l is a plan, of the rear half of the said invention.

Said figures represent a continuous and complete machine.

My invention relates to that class of oreseparators wherein the separation of the ore from its accompanying earthy or mineral matters of difl'erent specific gravities is effected by the mechanicalaction of water,and commonly called jigging, and it-consists in the structure and arrangement of the various instrumentalities in the manner hereinafter more particularly set forth.

A is the first or main jigging-sieve, upon which the coarse and fine ores, mixed with earthy and mineral matter, are received. The sieve A is mounted in the top of the tub, which is filled with water. The front end of said sieve is slightly higher than its tail end, and is movable laterally. It has imparted to it a gentle yet rapid vibration by the revolution of a shaft and eccentric, 12, driven by gears 15, and receiving motion from the main driving-shaft P. 13 is the pump-rod crankconnection to one of the gear-wheels 15. By said pump water is supplied to the tub A. The COl s'iant movement of the sieve A in the Water of the tub A causes the coarse ores and mineral lumps to move gradually to the tail end of said sieve, while the fine particles of ore will find their way through the sieve and settle to the bottom of the said tub. The earthy matters and minerals of less specific gravity than the ores will be prevented from passing through the sieve by the pulsating movements of the water and sieve, and will mostly pass over the tail-spout a with the coarse lumps. From the spout a the ores and accompanying matters pass between the crushing-rollersB,wherethelumpsarecrushed and reduced to a degree of fineness sufficient to enable the succeeding devices to properly "act upon them. From the rollersB-the crushed ores and other matters descend to the trough E, which delivers them to the interior of the rotary screen 0, which has its hearings on the margin of the tub G, and receives its motion by means of a pulley, 8, upon shaft P. The lower side of said rotary screen dips into the water, which fills tub G, and as the ores, &c., are tumbled over and over within thescreen 0, they not only abrade each other, but the finer particles find their way through said screen, and the ores settle to the bottom, while the matters of less specific gravity, known as light waste, are caused to float over the tail or waste spout 9 into a \vastetub, 10, by the continuous agitation caused by the revolution of the stirrer or fan 6 upon thevertieal shaft b, driven from the main shaft by the bevelgears 7. agitated by a revolving stirrer driven from shaft 1) by pulley 9. The small quantity of ore, passing with the light waste into tub 10, will here have opportunity to settle, while the light waste will be washed over spouts 20 20 to other similar tossing-tubs in succession, until all the ore has settled, and the separation is complete. From the rotating screen 0 the coarse ores and waste pass into a trough or chute, F, whereby they are conducted to the jiggers D D, to be further subjected to the pulsating action of water in the tubs m m, the ores being settled and caught in the bottoms of said tubs, and the waste being forced over the tail-spouts to other jiggers, or for final discharge as exhausted tailings.

The several tubs A G 10, m m, &c., are provided with valves 3 5 L, &c., in their conical bottoms, through which the ores may be discharged from time to time,and said valves are operated by suitable levers 2 4, &c. The valve 3 in the tub A discharges into the trough E, whereby the ores discharged are conducted to the rotary screen 0, then and thence to be manipulated, as above described, in reference to the crushed matters from the rollers B. The valve 5 in the tub G discharges into the trough H, whereby it is conducted to the jiggers 0 0, similar to the jiggers D, but employed to keep the comparatively fine ores from tub G separate from the coarse ores from the screen G. The meshes The water in the tub 10 is similarly of the sieves O are therefore considerably finer than the meshes of the sieves D. The action of the jigger is such that the heavier ores, which cannot pass through the sieves, collect at the surface of the seive, while the mineral matters, having a less specific gravity, are lifted to the top; therefore, after being su bmitted to the action of the jigger for a certain length of time, the sieve may be lifted out of the water and the waste skimmed ofl. For this purpose each sieve has a bail and a lever, 17, whereby it may be so lifted from the water.

The jigging motion is produced by a series of eccentrics, 11 11, upon the shaft R, which is mounted upon frames 23, and is driven by a belt over pulleys 14 14, one of which is upon the main shaft P. The sieves D 0 are suspended from the shaft R by chains 18, and at 19 the lifting-straps are attached, whereby said chains are connected to the levers 17. The levers 17 are fulcrumed upon a rod, S, which has its journals or hearings on the frames 23.

The main shaft P is driven by any conven' ient and adequate power, and motion may be transmitted to said shaft by means of a belt over the pulley 16. Any adequate pump may be employed.

Having now described my improvement, what I claim as new is- 1. The jigger A in the tub A, crushing-rollers B, rotary screen 0, and the tossing-tubs G and 10, combined to constitute a continuous series of manipulators, arranged substantiallly asflescribed, and for the purpose set fort 2. In combination with the jigger A, screen 0, and tossing-tub G, wherein the ore and waste is separated in accordance with fineness, the troughs FH, and graded jiggers D 0, arranged substantially as set forth.

3. The jiggers D O suspended from eccentrics 11 on the shaft R, combined with the lifting-levers 17, for the purpose set forth.

FRANCIS J. P. PASOOE.

Witnesses:

J. O. MATHER, WM. T. MATHEWS. 

